Parameters of viscous flow in dilute solutions of polyalkyl glycol ethers in secondary alcohols

• Published in: Journal of molecular liquids Vol. 162; no. 1; pp. 1 - 6
• Main Authors: Aznarez, Silvia, de Ruiz Holgado, Mercedes M.E.F., Arancibia, E.L.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.07.2011
• Subjects: Activation parameters for viscous flow; Aliphatic 2-alcohol; Jones–Dole coefficient; Tetraethylene glycol dimethyl ether; Triethylene glycol monomethyl ether; Triethylene glycol monomethyl ether; Activation parameters for viscous flow; Aliphatic 2-alcohol; Jones–Dole coefficient; Tetraethylene glycol dimethyl ether
• ISSN: 0167-7322; 1873-3166
• DOI: 10.1016/j.molliq.2011.02.008

Densities and viscosities were measured for the binary dilute mixtures of triethylene glycol monomethyl ether (TRIEGMME) in 2-alcohols (2-propanol (2-PR), 2-butanol (2-BU), and 2-pentanol (2-PE)) and tetraethylene glycol dimethyl ether (TEGDME) in 2-pentanol, at temperatures from 288.15 K to 318.15 K and in 0 ≤ x 2 ≤ 0.10 mol fraction range of the polyalkyl glycol ethers. The values of the dynamic viscosity in the TRIEGMME + 2-PR systems are more viscous than pure solvent at the work temperatures. The Jones–Dole B coefficients and β G interaction parameters for viscous flow values were calculated and explain the behavior observed. The partial molar volumes at infinite dilution of solute in 2-alkanols were calculated by the parameters of viscous flow obtained in dilute solutions polyalkyl glycol ethers in 2-alkanols. The values have been compared with the values of partial molar volume at infinite dilution obtained by density measurement for both solutes in the 2-propanol, 2-butanol, and 2-pentanol. ► We calculated the void molar volume from volumetric and viscosimetric data. ► Two methodologies were applied to obtain partial molar volume at infinite dilution. ► Two methodologies permit to calculate partial molar volume at infinite dilution. ► Volumetric properties of two polyalkylglycol ethers in 2-alkanols.